Since,　a　certain　degree　of　subjectivity　exists　in　determining　of　weights　in　gray　relational　analysis　and　the　DEA　analysis　can　only　evaluate　whether　the　unit　is　efficient,　but　the　effective　unit　cannot　be　ordered,　data　envelopment　analysis　(DEA)　and　weighted　grey　correlation　have　been　combined　to　achieve　fairness　and　objectivity　of　the　evaluation　results.　An　evaluation　system　from　the　perspective　of　input　and　output　for　the　coordination　of　urban　ecosystem　has　been　established　and　an　empirical　application　of　urban　ecosystem　in　Shanghai　has　been　carried　out　to　verify　the　validity　of　this　method.　©　2013　Asian　Network　for　Scientific　Information.